Directions:

1. Remove outer lettuce leaves and reserve for another dish. Cut out and discard the stem of the lettuce, hold lettuce under cold running water and gently remove 12 intact outer leaves. Trim into neat ‘cups’, put in a large bowl of iced water and refrigerate until needed.

2. Make Marinade: combine all ingredients

3. Stir marinade vigorously through the prawn meat until well combined. Stir through shiitake, carrot and water chestnut.